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Occupational Safety and Health Administration OSHA

Inspection Detail

Inspection: 125699264 - Mountain Cascade, Inc.,

Inspection Information - Office: Ca Concord

 

Inspection Nr: 125699264
Report ID: 0950622
Open Date: 11/19/1999

Site Address:
Mountain Cascade, Inc.,
Corner Of Ralph Ave. & Airport Way
Stockton, CA 95206

Mailing Address:
555 Exchange Court, Livermore, CA 94550

Union Status: Union

SIC:1629

NAICS: 0 


Inspection Type: Accident

Scope: Partial

Advanced Notice: N

Ownership: Private

Safety/Health: Health

Close Conference: 03/27/2000

Emphasis:

Close Case:11/20/2003


Related Activity
Type Activity Nr Safety Health
Accident 362087538
Violation Summary
Violations/Penalties Serious Willful Repeat Other Unclass Total
Initial Violations 8 7 15
Current Violations 4 5 9
Initial Penalty $21,250 $0 $0 $2,525 $0 $23,775
Current Penalty $10,625 $0 $0 $2,340 $0 $12,965
FTA Penalty $0 $0 $0 $0 $0 $0

Violation Items
# Citation ID Citaton Type Standard Issuance Date Abatement Due Date Current Penalty Initial Penalty FTA Penalty Contest Latest Event Note
1. 01001 Other 5144 M02 A 03/31/2000 09/25/2001 $375 $375 $0 04/10/2000 F - Formal Settlement  
2. 01002 Other 5144 A 03/31/2000 05/03/2000 $0 $185 $0 04/10/2000 F - Formal Settlement Citation has been deleted.
3. 01003 Other 5144 C 03/31/2000 09/25/2001 $375 $375 $0 04/10/2000 F - Formal Settlement  
4. 01004 Other 5144 C01 D 03/31/2000 05/03/2000 $0 $375 $0 04/10/2000 F - Formal Settlement Citation has been deleted.
5. 01005 Other 5144 D03 C 03/31/2000 09/25/2001 $280 $280 $0 04/10/2000 F - Formal Settlement  
6. 01006 Other 5144 F02 03/31/2000 09/25/2001 $185 $185 $0 04/10/2000 F - Formal Settlement  
7. 01007 Other 5158 E02 B 03/31/2000 05/03/2000 $0 $750 $0 04/10/2000 F - Formal Settlement Citation has been deleted.
8. 02001 Serious 5144 C01 H 03/31/2000 04/10/2000 $0 $1,875 $0 04/10/2000 F - Formal Settlement Citation has been deleted.
9. 03001 Serious 5144 K 03/31/2000 09/04/2001 $1,875 $1,875 $0 04/10/2000 F - Formal Settlement  
10. 04001 Serious 5158 D03 03/31/2000 09/04/2001 $1,875 $1,875 $0 04/10/2000 F - Formal Settlement  
11. 05001 Other 5158 D10 03/31/2000 09/04/2001 $1,125 $1,875 $0 04/10/2000 F - Formal Settlement  
12. 06001 Serious 5158 E01 E 03/31/2000 04/10/2000 $0 $1,875 $0 04/10/2000 F - Formal Settlement Citation has been deleted.
13. 07001 Serious 5158 E01 B 03/31/2000 09/04/2001 $1,875 $1,875 $0 04/10/2000 F - Formal Settlement  
14. 08001 Serious 5158 E01 D2 03/31/2000 04/10/2000 $5,000 $5,000 $0 04/10/2000 F - Formal Settlement Citation has been deleted.
15. 09001 Serious 5158 D07 03/31/2000 09/04/2001 $5,000 $5,000 $0 04/10/2000 F - Formal Settlement  

Investigation Summary

Investigation Nr: 201482692
Event: 11/11/1999
Three Employees Overcome By Sewage Liquids And Gases

At approximately 4:00 p.m. on November 11, 1999, three employees were injured while working in a confined space. Employee #1 was the stand-by attendant for a confined space entry for Employee #2 and Employee #3. The confined space was a shaft that was 18 ft deep and 5 ft in diameter. This was used as a manhole entrance to the juncture of a newly constructed 42 in. sewer line and an existing 30 in. live sewer line. As the two sewer lines were being joined, the inflatable "flow-through" plug being used to isolate the live sewer from the new sewer, was removed from the live sewer line. This resulted in sewage liquid and gases entering the shaft. The ladder used to get into the sewer was removed to facilitate the removal of the inflatable plug to the street surface using a backhoe to lift the plug. At that time the 32 in. fan being used to provide augmented ventilation to the confined space was turned off to take readings of the air contaminant concentration. The meter being used fell into the live sewer and was not recovered. After the plug was lifted to the street, the ladder was replaced into the shaft so that Employees #2 and #3 could exit. Employee #2 experienced "breakthrough" of the organic vapor cartridge air-purifying respirator being used and he removed the respirator. Employee #2 lost consciousness while ascending the ladder and was supported by Employee #3. Employee #1 then entered the shaft without respiratory protection or ventilating air, and descended the ladder approximately 3 ft to assist in extricating Employee #2. While on the ladder, Employee #1 lost consciousness and fell off the ladder to the bottom of the shaft. A fourth employee assisted Employee #3 in getting Employee #2 to the surface, where Employee #3 also lost consciousness. Employee #4 attempted to restart the fan while employees from another employer at the site conducted CPR on Employee #2. Once the fan was restarted, Employee #4 entered the shaft, without respiratory protection, using a rope to assist Employee #1 back to the surface. Employees #1, #2 and #3 were transported by ambulance to local hospitals. Employee #1 was admitted for a period four days and placed on mechanical ventilation life support. Employee #2 was released from the emergency room, against medial advisement, after receiving respiratory therapy. Employee #3 was released after approximately 4 hours after receiving respiratory therapy. Emergency Response Personnel collected readings for oxygen, LEL, carbon monoxide, and hydrogen sulfide in the shaft using a Biosystems PHD Ultra (Serial number 09142) multi- gas meter. Readings obtained within the shaft revealed 300 ppm hydrogen sulfide without mechanical ventilation. No elevated readings were obtained when the fan was running.

Keywords:oxygen, sewer, ventilation, confined space, ppe, hydrogen sulfide, overexposure, sewage, respirator

Investigated Inspection
# Inspection Age Sex Degree Nature Occupation
1 125699264 Hospitalized injury Poisoning(Systemic) Construction laborers
2 125699264 Non Hospitalized injury Asphyxia Construction laborers
3 125699264 Non Hospitalized injury Asphyxia Construction laborers
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